Fire extinguisher



w. B. BRONANDER FIRE EXTINGUI SHER Jan. 12, 1932.

Original Filed March 7', 19 28 INVEl QTQR MHz/m 5. Bronazrder ATTORNEY Reissued Jan. 12, 1932 WIIIHELM IB. IBBQNANDER, F MONTGLAIR, NEW JERSEY FIRE EXTINGUISHEB Original m. 1,808,154, dated'June'2, 1931, Serial No. 259,762, filed March 7, 1928. Application filed July 27, 1931.

This invention relates to fire extinguishers. More particularly stated, the inventlon relates to supports for the grenade type of fire extinguisher. I

This invention has for its salient object to provide a support for a grenade so constructed that the grenade can be easily and readily removed therefrom and, furthermore, so constructed and arranged that in case of fire the grenade will automatically drop, break and dispense the fire extinguishing fluid. Another object of the invention is to provide a bracket or holder for grenades com- 15 prising few parts and a structure that can e economically manufactured.

Another object of the invention is to provide a grenade support utilizing thermostatic metal in such a manner that the grenade will be automatically released in case of fire.

Further objects of the invention will appear from the following specification, taken in connection with the drawings, which form a art'of this application, and in which ig. 1 is a sectional elevation of a thermostatic strip; 7

Fig. 2 is an elevational view showing one form of grenade support embodyingthe invention;

Fig. .3 is a top shown in Fig. 2;

Fig. 4- is an elevational view illustrating plan view of the structure another embodiment of the invention;

Figs. 5 and 6 are sectional elevations taken substantially on lines 55 and 66 of Fig. 4; Fig. 7 is an elevational View illustrating another embodiment of the invention; and

Fig. 8 is a top plan view of the construction shown in Fig. 7

The invention briefly described consists of a grenade support comprising a supporting member or bracket and means carried by the supporting member and including a strip of thermostatic metal for engaging and holding a grenade. The strip of thermostatic metal is so constructed and arranged that in case of fire it will bend or be distorted under the action of heat and release the grenade from the holding means.

for reissue Serial No. 553,458.

The strips are so arranged that under the action of heat the bimetallic strip is bent or changes its configuration.

The terms thermostatic strip, strip of thermostatic metal? and thermostatic metal as used in' the specification and claims are intended to designate or define strips formed by joining together two metallic strips having different coefiicients of expansion and so arranged that the composite strip will bend or change its configuration under the action of heat. Such thermostatic metal is common in the arts and is used for various purposes, such as thermometers, thermostatic switches, etc. I a

In Figs. 2-and 3 of the invention there is shown a supporting member in the form of an eye to which is secured a disk 16 having radially disposed arms 17, 18 and 19 formed thereon or secured thereto. Oneor more, of

the arms is formed of thermostatic metal and the arms are normally bowed, as shown in Fig. 2, in such a manner as to embrace a grenade 20. The arms are resilient and of suflicient strengthto grasp and retain a grenade therein when the grenade is pushed into 7 orwithin the arms, as shown in Fig. 2.

It will be obvious that in case of fire the thermostatic metal will, under the action of heat, swing outwardly from the grenade, thus releasing the grenade which will fall and comprising arms 31 and 32 connected by an Lie arms were formed of thermostatic metaL. However, by forming both arms andthe loop of thermostatic metal a'greater spreading action of the arms under the action of heat is obtained. 7 It will be noted that the grenade is supported in tilted position and in case of fire the arms 31 and 32 will swing away from and release the grenade which will then fall and I et, means on the bracket for supporting a grenade from below, andugrenade embracing break, freeing the fire extinguishing fluid. In Figs. 7 and 8 the grenade is supported on the shelf 26, as in the form ofthe invention shown in Figs. 4, and 6, but in this embodim'entthe grenade is held on the shelf by an arm 40 having a dishedgrenade engaging member 41 on the outer end thereof. The arm 40 is formed of thermostatic metal and has integrally formed therewith aloop 43, the other end of the arm being secured as shown at to the back plate or bracket 25.

' In case of fire the arm 40 will swing upwardly away from the grenade, thus releasing the grenade from the engaging and retainin member 41 carried by the arm. The .grena e will then drop and break as above described.

From the foregoing description it will be ciearthat simple, practical and inexpensive grenade holding and retaining means has been designed and that in each formof the invention a new grenade can be easily and quickly placed in the 'holder or support after the thermostatic retaining means has resumedits normal grenade retaining position. It will also becle'ar that the only replacement required to place the apparatus in operable condition after a fire is the grenade itself and'no replacement of fusible links or other heat responsive-device is necessary.

I By the term 'grenad as used in the speci-' fication andcla'ims is meant a frangible container having a fire extinguishing fluid therein.

- Although certain specific embodiments of V the inventionutilizing thermostatic metal have been particularly illustrated and described, it will be obvious that further changes and modifications in the constructionand in the arrangement of the thermostatic grenade holding and retaining elements maybe made ing claims. a

-Wha't Iclaimisz- I 1. A'grenade support comprising supporting means and grenade engaging'a'nd supportingmeans carried by said means and in- :rluding astrip formed of thermostatic metal 2. A grenade support comprising a supporting element, and means carried by said element, including a thermostatic stripadapted to normally embrace and hold a grenade and to release the grenade under the action of heat.

3. A grenade su port comprising a bracket, means on'the bracket for supporting a grenade from below, and means including a' thermostatic strip for holding the grenade biased to fall by gravity when released from said supporting means. 4. A grenade support comprising abrackand holding means including a thermostatic strip for holding the grenade on said supportporting element, means on the supporting elementfor supporting a grenade from. below, and grenade embracing and holding means including. a thermostatic strip for holding the-grenade on said supporting means, said grenade being biased to fall by I gravity when released from said supporting means. I

6. A grenade support comprising a supporting element, and aplurality of resilient arms carried thereby and adapted to .em-

brace and support a grenade, at least one of said'arms being formed ofthermostatic metal constructed and arrangedto releasethe gre-' nade upon a rise in temperatureof said ther- H 'iot mostatic metal. 7 Y

7. A grenade support comprising a bracket, a shelf on the bracket for supporting a grenade ,from below, said grenade being biased to fall from the shelf, and means mcluding a thermostatic strip for holding the grenade on said supporting shelf, said thermostatic strip being. adapted'to release the grenade under the action of heat.

said means,;including a thermostatic strip and'adapted to embrace andvhold' a grenade and to release the grenade under the'aetion 9. A grenade support comprising supporting'elem'ent, and a plural-itfof grenade embracing and holding armscarried thereby,

said arms being. formedof resilient thermostatic'metal constructed and :arranged to re- H lease the grenade upon :a rise'in temperature 5 of said thermostatic metal. V

- 10. 'A grenade support comprising a bracket, means on'the bracket forsu'pport'ing -a 8. -A grenade support comprising su p p ort- I lng means, and resilient meanscarried by th,,

on said supporting-means, said grenade I ion grenade from below, and means including a strip of thermostatic metal carried by said bracket and having a (portion adapted to engage the grenade an hold the grenade on the supporting means, said strip having a loop intermediate its ends engaging the bracket, said to release the grenade under the action of heat.

11. A grenade support comprising a supportin element, and means carried thereby for re easably supporting a grenade, said means including a strip of thermostatic metal Erranged to release the grenade in case of 12. A grenade support comprising a supporting member, and means carried by said member and including a strip of thermostatic metal for supporting a frangible grenade, the grenade being supported from below and biased to fall under the action of heat on said thermostatic element.

- 13. A grenade support comprising supporting means, and grenade engaging and supporting means carried by said means and including a strip formed of thermostatic metal arranged to swing relative to the grenade and to release the grenade under the action of heat thereon.

14. A grenade support comprising a bracket, means on the bracket for engaging a grenade from below, and means including a strip of thermostatic metal coacting with the first named means to releasably support the grenade, said strip of thermostatic metal being arranged to release the grenade under the action of heat on said strip.

In Witness whereof, I have hereunto set my hand this 21st day of July, 1931.

WILHELM B. BRONANDER.

holding means being adapted 

